Permanent mold for metallic bath-tubs and the like.



G. W. FRANZHBIM.

PERMANENT MOLD FOR METALLIC BATH TUBS AND THE LIKE.

APPLIGATION FILED JULY 20, 1910.

1,009,296, 4 Patented Nov. 21, 1911.-

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J2 I i E I .19 J9 12E 15 2a INVENTEIH- \Mmssazsy 1 GEORGE W. FRANZHEIM,OF WEE-FILING, WEST VIRGINIA.

PERMANENT MOLD FOR METALLIC 'IBATH-TU BS AND THE LIKE.

Specification of Letters Patent. Patented Nov, 21, 1911.

Application filed July 20, 1910. Serial No. 572,932.

To all whom it may concern:

Be it known that I, GEORGE W. FRANZ- HEIM, a citizen of the UnitedStates of America, and resident of Wheeling, county of Ohio, and Stateof West Virginia, have invented certain new and useful Improvements inPermanent Molds for Metallic Bath-Tubs and the Like, of which thefollowing is a specification.

This invention relates to a pressure mold for metallic bath tubs andother similar articles, and. it has for its primary object.

to provide a permanent mold whereby'such articles may be formed.

A further object of the invention is to provide a two-part permanent.mold, consisting of a cheek and drag, having means whereby said partsmay be separated.

A still further object is to provide a mold of the character mentioned,formed either of metal or a refractory material, cast-iron beingpreferred, which shall obviate the necessity for employing sand foreffecting the formation of the casting.

'With these and-other important objects in view, the inventionaccordingly consists in the features of construction, combinations ofelements, and arrangement of parts which will'be exemplified 1n theconstruction hereinafter set forth, reference being herein hadto theaccompanying drawing, forming a part of this specification.

In said drawing,Figure 1 is a top plan view of one embodiment of theinventlon; Fig. 2 is a general sectional elevation, the section beingtaken on the line 22, Fig. 1'; and Fig. 3 is a transverse sectional viewon the line 33, Fig. 1.

Referring to said drawings, wherein llke designating charactersdistinguish like parts throughout the several views-1 indicates a cheekmold which is adapted to be supported in any appropriate manner, as bytrunnions 2 formed on its opposite ends for mounting in a 'suitablesupporting frame (not shown). The under side of said checkmold ishollowed out, the walls defining the hollowed-out portion conforming inshape to that desired for the bath-tube or other articleto be molded, abath-tub mold being herein depicted.

A drag-mold 3 is mounted to coiiperate with the cheek-mold 1, the upperside of' said drag-mold being shaped to conform in size and form withthat ,desired for the tub. Said drag-mold is mounted so as to rod 4 of afluid or air pressure motor or cylinder 5. Said cylinder is suitablymounted inan upright position, as upon a base 6. ,Suitable iding meansis employed be vertically movable, as upon the pistonwhereby thedrag-mold 3 is maintained against rotary movement while being raised andlowered with respect to the cheek-mold 1. The guiding means illustratedconsists of a plurality of vertical rods 7 depending from said drag-moldand movable in vertical'sockets 8 provided in upright pedestals 9 formedintegral with the base 6.

When the drag-mold has been elevated to the limit of its upwardjmovementwith respect to 'the cheekmold, an opening 10 of.

the thickness, size and contour desired for the tub is formed.

Located at suitable points in the cheekll through which the fluid metalis poured, said side gates being preferably lined with a suitablerefractory material 12. The metal A plurality of vents 15 are providedin the cheek and drag for admitting of the escape of the gases from thepoured metal and for preventing the resistance which would otherwise becreated by thev formation of a vacuum between the molded tub and themold parts when the latter are separated.

Guide pins 16 carried by the drag-mold project through openings in lugs17 carried by the cheek-mold for guiding the two mold parts into properregistration.

Clamps 18 may be secured upon outstanding lugs 19 and 20 carried by thecheek and drag, respectively, for maintaining said mold parts in fixedrelation during the molding operation.

Both the cheek and drag are water-j acketed or cored out, as shown inFigs. 2 and 3,

to allow of a circulation of water for main- 75 mold is a plurality ofvert cal side gates taining the mold parts at substantially a uniformtemperature.

From the foregoing, it will be seen that I provide an extremely simpledevice of the character described. It will, however, be noted thatvarious alterations within the scope of the appended claims may be madewithout departing from the general spirit or scope of the invention.Hence I do not desire to limit myself to the precise construction andarrangement of parts herein shown and described.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. A permanent mold for metallic bath tubs, comprising a metallic cheelihaving suitably mounted trunnions, a metallic drag located beneath saidcheek, said cheek and drag when associated in cooperative relationhaving therebetween an opening of inverted tub form, said cheek havingside gates lined with refractory material through which said opening maybe filled, and also having bottom gates, said side gates communicatingwith said opening at the lowermost point of the latter, means forelevating and lowering said drag with respect to said cheek, means forguiding said drag, and means for maintaining said drag against rotarymovement while being raised and lowered.

2. A permanent mold for metallic bathtubs and the like, comprising asuitably mounted metallic cheek Whose under side is hollowed out toconform in size and shape to that of the outer surface of the article tobe molded, a metallic drag whose upper side is shaped to conform in sizeand shape to that of the inner surt'aceozt said article, a piston rodupon which said drag is mounted, a motive power cylinder for impartingvertical movement to said piston rod, and means whereby said drag isguided into proper registration with said cheek, said" means comprisingapertured lugs carried by said cheek and guide-pins carried by the drag,said lugs and guide-pins cooperating.

In testimony whereof I afliX my signature in presence of two subscribingwitnesses.

GEORGE W. FRANZHEIM;

W itnesses H. E. DUNLAP, C. H. DUNLAP.

